[root@server ~]# /var/qmail/bin/qmail-qread | grep remote | awk -F\@ ‘{print $2}’ |sort | uniq | sort -n
aol.com
bigpond.net.au
comcast.net
gmail.com
hotmail.com
msn.com
nc.rr.com
yahoo.com
yahoo.co.uk

qmHandle – qmail Handler

[root@server ~]# qmHandle -s
Total messages: 225
Messages with local recipients: 0
Messages with remote recipients: 225
Messages with bounces: 0
Messages in preprocess: 0

qmHandle -l                       list all emails in queue
qmHandle -mN                 show email no N from queue
qmHandle -dN                  delete email no N from queue
qmHandle -R                     show remote emails from queue
qmHandle -D                     delete all messages from queue
qmHandle -a                 try to send messages from queue

[root@server ~]# /var/qmail/bin/qmail-qstat
messages in queue: 224
messages in queue but not yet preprocessed: 0